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Replacing Texas Instruments TI-92 Backup Battery 



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Replacing Texas Instruments TI-92 Backup Battery 



Tools used in this guide 

• Phillips #00 Screwdriver 



Parts relevant to this guide 

• CR 2032 3V Lithium Battery 




Step 1 - installation Back Cover 

• The first step to any repair operation is to 
remove the front cover. 



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• Grab the back of the calculator with one hand and the 
cover with the other. 

• Pull the cover off from one of the sides for easy 
removal. 



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Replacing Texas Instruments TI-92 Backup Battery 




Step 2 

• Orientate the calculator with the top facing towards you. 

• Slide the locking tab,found on the top part of the 
calculator, to the unlock position. 




Step 3 

• "Locking Tab" 

• To remove the back cover, slide the cover away from 
the locking tab towards the bottom of the calculator until 
the cover no longer slides. 

• Then with the front of the calculator facing down, pull 
up on the back cover. 

• The calculator should now be orientated with the front 
facing down, as shown in picture 2. 



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Replacing Texas Instruments TI-92 Backup Battery 



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Step 4 - Backup Battery 

• Before removing the backup battery make 
sure your AA batteries are installed so that 
there is no loss of information. 



A 



Using a #00 Philip Screwdriver remove the 19mm 
screw located near the center of the back of the 
calculator on the panel with words ''Test Access'' 




Steps 

• Remove the screw and lift the panel to access battery. 



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Replacing Texas Instruments TI-92 Backup Battery 




Step 6 

• The backup battery can now be seen underneath a 
small metal cover held by a screw. 

• Using the same screwdriver, unscrew the 4.6mm screw 
located under the panel and left of the backup battery. 




Step 7 

• Remove the metal cover keeping the backup battery in 
place. 



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Replacing Texas Instruments TI-92 Backup Battery 




Steps 

• Use an Ipod Opening Tool or a similar tool to pull up on 
the right side of the backup battery. 

• The battery should pop out of position. 




Step 9 

• After the battery has been tilted out of its socket, simply 
remove it with your hands. 



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www.iFixit.com 



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